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/* SPDX-License-Identifier: LGPL-2.1-only */
/**
* libcgroup googletest for cgroup_set_values_recursive()
*
* Copyright (c) 2020 Oracle and/or its affiliates.
* Author: Tom Hromatka <tom.hromatka@oracle.com>
*/
#include <ftw.h>
#include "gtest/gtest.h"
#include "libcgroup-internal.h"
static const char * const PARENT_DIR = "test009cgroup/";
static const char * const NAMES[] = {
"cpu.weight",
"cpu.weight.nice",
"cpu.foo",
"cpu.bar"
};
static const int NAMES_CNT = sizeof(NAMES) / sizeof(NAMES[0]);
static const char * const VALUES[] = {
"999",
"15",
"random",
"data"
};
static const int VALUES_CNT = sizeof(VALUES) / sizeof(VALUES[0]);
class SetValuesRecursiveTest : public ::testing::Test {
protected:
void SetUp() override {
char tmp_path[FILENAME_MAX];
int ret, i;
FILE *f;
ASSERT_EQ(NAMES_CNT, VALUES_CNT);
ret = mkdir(PARENT_DIR, S_IRWXU | S_IRWXG | S_IRWXO);
ASSERT_EQ(ret, 0);
for (i = 0; i < NAMES_CNT; i++) {
memset(tmp_path, 0, sizeof(tmp_path));
ret = snprintf(tmp_path, FILENAME_MAX - 1, "%s%s",
PARENT_DIR, NAMES[i]);
ASSERT_GT(ret, 0);
f = fopen(tmp_path, "w");
fclose(f);
}
}
/*
* https://stackoverflow.com/questions/5467725/how-to-delete-a-directory-and-its-contents-in-posix-c
*/
static int unlink_cb(const char *fpath, const struct stat *sb, int typeflag,
struct FTW *ftwbuf)
{
return remove(fpath);
}
int rmrf(const char * const path)
{
return nftw(path, unlink_cb, 64, FTW_DEPTH | FTW_PHYS);
}
void TearDown() override {
int ret;
ret = rmrf(PARENT_DIR);
ASSERT_EQ(ret, 0);
}
};
TEST_F(SetValuesRecursiveTest, SuccessfulSetValues)
{
char tmp_path[FILENAME_MAX], buf[4092];
struct cgroup_controller ctrlr = {0};
int ret, i;
char *val;
FILE *f;
ret = snprintf(ctrlr.name, CONTROL_NAMELEN_MAX, "cpu");
ASSERT_GT(ret, 0);
for (i = 0; i < NAMES_CNT; i++) {
ctrlr.values[i] = (struct control_value *)calloc(1,
sizeof(struct control_value));
ASSERT_NE(ctrlr.values[i], nullptr);
strncpy(ctrlr.values[i]->name, NAMES[i], FILENAME_MAX);
strncpy(ctrlr.values[i]->value, VALUES[i],
CG_CONTROL_VALUE_MAX);
if (i == 0)
ctrlr.values[i]->dirty = true;
else
ctrlr.values[i]->dirty = false;
ctrlr.index++;
}
ret = cgroup_set_values_recursive(PARENT_DIR, &ctrlr, false);
ASSERT_EQ(ret, 0);
for (i = 0; i < NAMES_CNT; i++) {
memset(tmp_path, 0, sizeof(tmp_path));
ret = snprintf(tmp_path, FILENAME_MAX - 1, "%s%s",
PARENT_DIR, NAMES[i]);
ASSERT_GT(ret, 0);
f = fopen(tmp_path, "r");
ASSERT_NE(f, nullptr);
val = fgets(buf, sizeof(buf), f);
ASSERT_NE(val, nullptr);
ASSERT_STREQ(buf, VALUES[i]);
fclose(f);
}
}
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